If you can get the system on at all run a program called jelly bean key finder https://www.magicaljellybean.com/keyfinder/ <<<<you can get it here. Write down your windows product key and reinstall windows from the ground up. I'm not really sure what you mean by resetting. Do you mean you're trying to put windows on it and it's not working. Which version of Windows. What is the make and model of your laptop?